Investigation and Protection Measures of Ancient and Valuable Trees in Ya'an

Through the current status investigation of the ancient and valuable trees among the six counties and two districts of Ya'an, it was found out that the existing amount, types, distribution and other status of the ancient and valuable trees. Analysis was made of the current situation and problems in protecting the ancient trees. Besides, a discussion was made on the technical measures related to the ancient and valuable trees' protection management under the current circumstance.